Investment return and principal will fluctuate so that an investor's shares, when
redeemed, may be worth more or less than their original cost. Past performance is
no guarantee of future results. Returns shown in the table do not reflect the deduction
of taxes a shareholder may pay on fund distributions or redemption of shares.

The inception date for the Parnassus Fund is December 31, 1984. The inception date
for the Parnassus Core Equity Fund and Parnassus Fixed Income Fund is August 31,
1992. The inception date for the Parnassus Mid-Cap Fund
and Parnassus Endeavor Fund is April 29, 2005. The inception date for the Parnassus Asia Fund is April 30, 2013. The inception date for the Institutional
Shares of the Parnassus Core Equity Fund is April 28, 2006. The inception date for the Institutional Shares of the Parnassus Fund, Parnassus Endeavor Fund, Parnassus Mid Cap Fund, Parnassus Asia Fund and Parnassus Fixed Income Fund is April 30, 2015.

Before investing, an investor should carefully consider the investment objectives,
risks, charges and expenses of a fund and should carefully read the prospectus or summary prospectus, which contains this and other information and can be found in our Forms and Documents
section. Investment return and principal value will fluctuate so that an investor’s
shares, when redeemed, may be worth more or less than their original principal cost,
and you could lose money.

The Parnassus Funds are underwritten and distributed by Parnassus Funds Distributor,
a subsidiary of Parnassus Investments and a
FINRA member.